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Win 7 Ent (64). running slow with low cpu and memory usage
Ok, so I've been searching the web for weeks looking for information on a problem I have. I have found that the best advices for problems with win7 are always on this site so I post my problem here :).
The problem is that my computer is running slow and stopping for a few seconds every few seconds when I'm doing ordinary tasks, and if I try doing anything advanced like CAD/3D-modelling the system almost stops completely. I get a lot of "not responding" and have to end processes in Task Manager. MS Office 2007 is one of the worst.
CPU usage is seldom above 10 to 20 %, memory usage never above 32 % and commit charge is about 30 %. Even under heavy usage.
The only measurable thing I have found is that my hard faults usually spikes when the computer stops for a few seconds. This leads me to believe that windows isn't using the ram very efficiently, but I can not find any tweaks for making windows use more of it. If I open a lot of windows, like ten virtual machines, I can see that the memory is available but under normal circumstances it isn't used.
So far I have tried all the usual suspects:
- Virus scan with updated definitions using my company supplied Microsoft Forefront, and also with Clamwin. No viruses.
- Malware scan using Spybot, removed some small threats.
- Made sure windows and drivers were updated.
- De fragmented hard drive.
- De fragmented paging file (deleted it, rebooted, enabled it again).
- Deleted a lot of programs from startup (I'm still running 80 + processes after boot, but I have disabled everything I knew I could do without.)
- Cleaned up registry using CCleaner
- Cleaned up hard drive using CCleaner
- Ran memory and hard drive test pre-boot without getting any errors.
I have got some improvement from this, but nothing like when the computer was new. I have been using it for 5-6 months.
I am dual booting Ubuntu 10.10 and everything is running nicely under linux, so I don't think its a hardware problem.
The computer I am using is a HP Elitebook 8540w with Win 7 Enterprise 64 bit. I have an Intel Core i7 running at 1.6 GHz, 8GB ram, Nvidia Quadro FX 880M.
Any suggestions will be most welcome as I'm a little lost for ideas right now. And I don't feel like doing a complete reinstall.