terribly slow performance

Hey everyone. This is my first post here. Seems like there's a lot of smart people here so maybe someone can give me some help.

This weekend I installed Windows 7 x64 RTM. With this new install I also installed a new motherboard (gigabyte ma790x-ud4p) and new hard drive (western digital caviar black 750gb). At first everything seemed to be working just fine. Later on I updated the soundcard, videocard and main chipset drivers. After installing the drivers my performance has gone downhill. Here are some problems I'm having.

1.) If I try to extract an .rar file and run another program, the system nearly stops responding.
2.) Copying files is very slow. Took 2.5 hours to transfer 100GB between to internal sata drives. The files were being copied at about 9MB/s.
3.) If scrolling a web page, the scroll will halt for about a second sometime during the time of scrolling.
4.) Running HD Tune on the new hard drive shows that it has an average transfer rate of 20MB/s where the other hard drives are around 90MB/s.
5.) Raxco PerfectDisk cannot perform a system files defrag on the non-operating system hard drives. It says the files are locked. It was not like this on Vista.
6.) I cannot disable write caching on the new hard drive.

I've uninstalled all the updated drivers and am now back to the standard Windows 7 drivers. I've disabled all visual animation effects. I've defragmented all three hard drives I have.

I'm at a loss of what could be causing the problem. Hopefully someone can shed some light on the subject and give me some help. Thanks in advance!

System Specs:
Motherboard: gigabyte ma790x-ud4p
CPU: DualCore AMD Athlon 64 X2, 2400 MHz 4600+
Ram: 4gb ddr2
Videocard: nvidia 9600gt
Sound: onboard

PC

Do you have backup to restore from? You can run system file checker (sfc /scannow) to check the system files. You can also run a repair install, or finnally restore from backup.

Could you also check event viewer (type event in search) to go to the win log>app tab and see if there are any errors regarding this issue.

Ken

I had a similar problem with WinRAR64. Disable WinRAR shell integration and test.

Thank for all the help. As it turned out, it was Winrar shell integration that was causing a problem. That's a shame because it's nice to have that integration. Think I'll shoot them an e-mail today and see what they say. Thanks again.

ussj4brolli said:

Using what version? I use winrar64 3.90 final with no issues (shell extention enabled)
Hmm...

WinRAR 64 3.9 does work well on my system with integration enabled. The fix was an update from 3.something else

ussj4brolli said:

Using what version? I use winrar64 3.90 final with no issues (shell extention enabled)
Hmm...

I was using winrar64 3.9. Switched over to 7-zip and everything seems to be fine. The people at winrar said they could not reproduce my problem, but that it is probably a conflict with another background program service. The only one I could think of that's on my computer would be spyware terminator. It's not fully Windows 7 x64 compliant yet.