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Why does my Bios change boot device priority? (PC has become slow;games do not work efficiently)

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August 6, 2013 1:01:42 AM

Hi. I have a desktop with Pentium dual-core CPU E5400 2.70Ghz, 4GB ram, 64-bit Windows 7 Ultimate, a Zotac 2 GB graphics card Nvidia GeForce 430 series, with master 1 TB hard drive and a secondary hard drive of 500 GB.

The problems began a few days back while playing Black Ops on my PC. During gameplay, there was a blue screen, system restarted and said, "4th slave disk error" and then gave the message "Restore system disk or boot disk.....".

After taking it to a shop (because I did not want to wreck my PC further. Only recently, I had to buy the Zotac after my ASUS 1 GB agp died. Also the 1 TB hard drive is new), the hardware expert told me that the hard drives are all good because no data has been modified or corrupt. But he identified the problem is that Bios changes the boot device priority. Although boot priority is saved with 'CD-rom' followed by '1 TB hard drive' as master, this changes to 'CD-Rom' followed by '500 GB Hitachi' when the computer reboots. He told me that the problem is possibly with the mainboard.

However, even while struggling with the PC, when I am in the internet browsing, it slows down. Also, I cannot play any games. They slow down and then hang altogether.

Please, you guys, tell me what I should do? How can i diagnose what the problem is?

Thanks
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August 6, 2013 1:39:32 AM

What antivirus are you using?

Also grab ccleanr, run a file clean then run the registry cleaner multiple times till it finds no errors.
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August 6, 2013 3:23:34 AM

mauller07 said:
What antivirus are you using?

Also grab ccleanr, run a file clean then run the registry cleaner multiple times till it finds no errors.


Hi Mauller07,
I am using Kaspersky. However, I usually switch it off when playing games. Also, besides the virus issue, can there be other problems?
Should I change the mainboard and processor?
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Best solution

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August 6, 2013 3:30:37 AM

Try reinstalling kaspersky with the latest installer from the site and see if the performance issues continue.

Try to sort the slow PC issue first then the boot order one, one may even fix the other.
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August 6, 2013 9:52:59 AM

mauller07 said:
Try reinstalling kaspersky with the latest installer from the site and see if the performance issues continue.

Try to sort the slow PC issue first then the boot order one, one may even fix the other.

Hello again.

I downloaded and installed CCleaner as you mentioned. I did the registry file cleaner. It found 29 issues. Fixed it. How many times do I need to run this? Kaspersky is also scanning the entire system right now. Thanks a lot for your help again.

Update: Did a second check on registry with CCleaner. This time found 14 issues. fixed it.. The third attempt at registry found no more issues. Now checking the files. I will let you know how this works out. Btw, most of the issues were with dll files. Do you think that could have been the problem?
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August 6, 2013 9:56:32 AM

just run the registry cleaner till it finds nothing else.

so basically run it and fix what it finds, then run it again etc.
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