{"id":3890,"date":"2012-07-09T20:56:57","date_gmt":"2012-07-09T20:56:57","guid":{"rendered":"http:\/\/malwaretips.com\/blogs\/?page_id=3890"},"modified":"2018-05-23T08:05:45","modified_gmt":"2018-05-23T08:05:45","slug":"fix-computer-wont-start","status":"publish","type":"page","link":"https:\/\/malwaretips.com\/blogs\/fix-computer-wont-start\/","title":{"rendered":"How to fix a computer that won&#8217;t boot (Complete Guide)"},"content":{"rendered":"<p>Here are some common errors Windows 7 and Vista errors which this guide can fix:<\/p><div id=\"mwtad14529533\" class=\"gas_fallback-ad_309684--placement_360520\" style=\"margin-top: 30px;margin-bottom: 30px;\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-7750719144850257\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-7750719144850257\" \ndata-ad-slot=\"3957935887\" \ndata-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div>\n<ul>\n<li>no bootable device \u2013 insert boot disk and press any key<\/li>\n<li>NTLDR is missing or corrupted<\/li>\n<li>Ntoskrnl.exe is missing<\/li>\n<li>Ntdetect.com is missing<\/li>\n<li>BOOTMGR is missing or corrupted<\/li>\n<li>NTFS.SYS is missing<\/li>\n<li>Hal.dll is missing<\/li>\n<\/ul>\n<div id=\"mwtad344075936\" class=\"gas_fallback-ad_309746-ad_309691-placement_360521\" style=\"margin-top: 30px;margin-bottom: 30px;\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-7750719144850257\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-7750719144850257\" \ndata-ad-slot=\"4456629336\" \ndata-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div><h2 class=\"mt_title\">How to fix a computer that won&#8217;t boot &#8211; Instructions<\/h2>\n<ol>\n<li>Turn your computer on, booting from either your Windows 7 Installation DVD or Windows 7 System Recovery Disc.\u00a0 Remember, you may need to change the boot order inside your BIOS to have the your DVD drive boot first.\n<\/li>\n<li>After the installation or recovery disc loads, if prompted, select your language settings and then continue.\u00a0 If you are using the installation DVD, when prompted by the following screen select\u00a0<em>Repair your computer<\/em>.<br \/>\n<img decoding=\"async\" class=\"alignnone size-full wp-image-3894\" title=\"Select &#039;Repair your computer&#039; option\" src=\"https:\/\/malwaretips.com\/blogs\/wp-content\/uploads\/2012\/07\/windows-7-repair-your-computer.jpg\" alt=\"\" width=\"624\" height=\"460\" srcset=\"https:\/\/malwaretips.com\/blogs\/wp-content\/uploads\/2012\/07\/windows-7-repair-your-computer.jpg 624w, https:\/\/malwaretips.com\/blogs\/wp-content\/uploads\/2012\/07\/windows-7-repair-your-computer-300x221.jpg 300w\" sizes=\"(max-width: 624px) 100vw, 624px\" \/><\/p>\n<\/li>\n<li>The computer will take a moment now to scan itself for any Windows installations, after which you will likely be given a choice to select which installation you wish to repair.\u00a0 Select the appropriate Windows installation from the list and then continue. If by chance a problem is detected in one of your Windows installations at this initial stage, the system may also ask you if it can try to repair the problem automatically. It is up to you if you wish to let the system try to repair itself, but otherwise just select\u00a0<em>No<\/em>.\n<\/li>\n<li>Once you have reached the\u00a0<em>System Recovery Options\u00a0<\/em>screen, as shown below, you will be faced with a list of choices that can aid you in repairing a damaged Windows 7 operating system.\u00a0 If you wish to try the\u00a0<em>Startup Repair<\/em>\u00a0option first, it is often successful in automatically fixing many different start up issues, but in this article we will be using the\u00a0<em>Command Prompt<\/em>\u00a0option to resolve our problems manually. So, click\u00a0<em>Command Prompt<\/em>\u00a0to continue.<br \/>\n<img decoding=\"async\" class=\"alignnone size-full wp-image-3896\" title=\" Select the Command Prompt option\" src=\"https:\/\/malwaretips.com\/blogs\/wp-content\/uploads\/2012\/07\/systemrecoverycmd.jpg\" alt=\"\" width=\"485\" height=\"363\" srcset=\"https:\/\/malwaretips.com\/blogs\/wp-content\/uploads\/2012\/07\/systemrecoverycmd.jpg 485w, https:\/\/malwaretips.com\/blogs\/wp-content\/uploads\/2012\/07\/systemrecoverycmd-300x224.jpg 300w\" sizes=\"(max-width: 485px) 100vw, 485px\" \/>\n<\/li>\n<li>Now sitting at the command prompt, enter the following command and then press enter:\n<p><em>bootrec.exe \/FixMbr<\/em><\/p>\n<p>If successful, you should be greeted with the message\u00a0<em>The operation completed successfully.\u00a0\u00a0<\/em>That&#8217;s it!\u00a0 Your Master Boot Record has been repaired.<\/p>\n<p>While the above command does fix the MBR, and sometimes that is enough, there still might be an error with the system partition&#8217;s boot sector and Boot Configuration Data (BCD). This might occur if you have tried to install another operating system alongside Windows 7, such as Windows XP.\u00a0 To write a new boot sector, try the following command:<\/p>\n<p><em>bootrec.exe \/FixBoot<\/em><\/p>\n<p>If you are still faced with your Windows 7 installation not being detected during start up, or if you wish to include more than one operating system choice to your system&#8217;s boot list, you can try the following command to rebuild your BCD:<\/p>\n<p><em>\u00a0 \u00a0bootrec.exe \/RebuildBcd<\/em><\/p>\n<p>The above command will scan all your disks for other operating systems compatible with Windows 7 and allow you to add them to your system&#8217;s boot list. If this fails, you may need to backup the old BCD folder* and create a new one in its place with the following commands:<br \/>\n<em><br \/>\n<\/em><\/p>\n<div><em>\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0bcdedit \/export C:\\BCD_Backup<br \/>\n<\/em><\/div>\n<div><em>\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0c:<br \/>\n<\/em><\/div>\n<div><em>\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0cd boot<br \/>\n<\/em><\/div>\n<div><em>\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0attrib bcd -s -h -r<br \/>\n<\/em><\/div>\n<div><em>\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0ren c:\\boot\\bcd bcd.old<br \/>\n<\/em><\/div>\n<p><em>\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0bootrec \/RebuildBcd<br \/>\n<\/em><br \/>\n*Some users also find simply deleting the boot folder and retrying the above steps effective at resolving boot issues, but it is not recommended.\n<\/li>\n<\/ol>\n<div id=\"mwtad1319535121\" class=\"gas_fallback-ad_309747-ad_309691-placement_360587\" style=\"margin-top: 30px;margin-bottom: 30px;\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-7750719144850257\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-7750719144850257\" \ndata-ad-slot=\"9589536513\" \ndata-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div><h2 class=\"mt_title\">How to change active partitions<\/h2>\n<p>Upon purposely changing the active partition on my system drive, I was faced with a\u00a0<em>BOOTMGR is missing\u00a0<\/em>error during my system&#8217;s start up that prevent Windows from starting. It is a common mistake to make when playing with partitions on a system drive and it can be a headache to solve if not prepared. To change your active partition back using the Windows 7 recovery disc or Installation DVD, follow the steps below.<\/p>\n<ol>\n<li>Follow steps one to four in the above guide. This should take you to the Command Prompt in the Windows Recovery Environment.<\/li>\n<li>Type\u00a0<em>DiskPart\u00a0<\/em>and then press\u00a0<em>Enter<\/em>.<\/li>\n<li>\n<\/li>\n<li> Type\u00a0<em>List Disk<\/em>\u00a0now and then press\u00a0<em>Enter<\/em>. This command will list all disks attached to your computer and assign them a disk number.<\/li>\n<li>Type\u00a0<em>Select Disk x<\/em>, where\u00a0<em>x<\/em>\u00a0is the number for the disk containing the partition you wish to make active. Press\u00a0<em>Enter.<\/em><\/li>\n<li>Type\u00a0<em>List Partition<\/em>\u00a0and then press\u00a0<em>Enter.\u00a0<\/em>You will now be shown a list of the partitions on the selected disk. Determine which partition you wish to make active.<br \/>\nYou&#8217;ll see a list which will display your system partition.<br \/>\n<span style=\"color: #ff0000;\"><em>(this is an example list)<\/em><\/span><\/p>\n<blockquote><p>Partition 1 OEM 39 MB<br \/>\nPartition 2 Primary 750 MB<br \/>\nPartition 3 Primary 297 GB\u00a0\u00a0\u00a0<span style=\"color: #ff0000;\">&lt; select the partition with Windows, which is probably the first one larger than 16 GB<\/span><\/p><\/blockquote>\n<\/li>\n<li>Type\u00a0<em>Select Partition x<\/em>, where\u00a0<em>x<\/em>\u00a0is the number of the partition you wish to make active.<\/li>\n<li> Now, just type\u00a0<em>Active<\/em>\u00a0and then press\u00a0<em>Enter.<\/em>\u00a0That should be it &#8211; the selected partition is now active.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Here are some common errors Windows 7 and Vista errors which this guide can fix: no bootable device \u2013 insert boot disk and press any key NTLDR is missing or corrupted Ntoskrnl.exe is missing Ntdetect.com &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"How to fix a computer that won&#8217;t boot (Complete Guide)\" class=\"read-more button\" href=\"https:\/\/malwaretips.com\/blogs\/fix-computer-wont-start\/#more-3890\" aria-label=\"Read more about How to fix a computer that won&#8217;t boot (Complete Guide)\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":3894,"parent":0,"menu_order":10,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3890","page","type-page","status-publish","has-post-thumbnail","resize-featured-image"],"_links":{"self":[{"href":"https:\/\/malwaretips.com\/blogs\/wp-json\/wp\/v2\/pages\/3890","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/malwaretips.com\/blogs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/malwaretips.com\/blogs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/malwaretips.com\/blogs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/malwaretips.com\/blogs\/wp-json\/wp\/v2\/comments?post=3890"}],"version-history":[{"count":0,"href":"https:\/\/malwaretips.com\/blogs\/wp-json\/wp\/v2\/pages\/3890\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/malwaretips.com\/blogs\/wp-json\/wp\/v2\/media\/3894"}],"wp:attachment":[{"href":"https:\/\/malwaretips.com\/blogs\/wp-json\/wp\/v2\/media?parent=3890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}