For testing purposes, it's best to install Windows "clean".
This is, basically, installing it the way that Microsoft intended (using drivers from Windows Update).
This procedure is for Windows 7 and Vista
You will need your installation/recovery DVD(s) before you start. Once you wipe the hard drive there's no going back!!!
1. Backup all your data.
This will wipe everything off of your hard drive, so anything that you want to keep will need to be saved elsewhere. NOTE:
If this is due to an infection, remember to scan the data with another system's current antivirus in order to locate and remove any malware. NOTE:
Disconnect any additional hard drives (internal and external) that you may have installed. This may break any multi-boot setups that you have, so be prepared to conduct recovery operations on them once you're done. Don't forget that, if this is due to an infection, the additional hard drives may be infected also.
2. Connect the system to the internet (if the system says disconnect from the Internet, then do so).
3. Use one of these free utilities to wipe the hard drive clean:
DBAN ( DBAN Download | Darik's Boot And Nuke
KillDisk ( Freeware Download Active@ KillDisk
This will also delete any recovery partitions on the system - so the installation/recovery DVD's are essential!!!
4. Install Windows by booting from the installation/recovery DVD - DO NOT tweak any settings!!!
5. Visit Windows Update and get all updates
6. Check Device Manager for any unknown/disabled devices - if there are unknown/disabled devices, fix them with the latest drivers from the device manufacturer's website (not the PC Manufacturer)
7. Visit Windows Update and get the Service Packs for your system. (usually under Important Updates).
Read these notes for installing Windows 7 SP1
Read these notes for installing Vista SP1
Read these notes for installing Vista SP2
Search Google/Bing for installing other OS's Service Packs.
8. Visit Windows Update and get any other available updates
9. Download, install, and update a free antivirus so you don't get infected while testing ( http://www.carrona.org/freeav.html
). If the problems persist
, then the problem is most likely with your hardware. CAVEAT:
If you have an Asus motherboard, check the date on the C:\Windows\System32\driver\ASACPI.sys file. 2004/2005 is a problem, 2009/2010 is OK. Updates are available at the Asus support website. CAVEAT:
If you have a Sony system, make sure that you DO NOT have the 2007 (or earlier) version of the Sony Firmware Extension Parser (SFEP.sys). Update this driver immediately!!!