Posted 15 April 2011 - 10:47 AM
I have this problem that I've been trying to diagnose for a month or so. It's proving difficult. The problem has been happing since around February this year. The computer build is over 1 year old.
Every few hours, I get constant disk access for approximately 3 mins. I don't have a virus, it doesn't match a schedule & I don't have much hair left. During the disk access (the pc disk light is on constantly), I can move the mouse, but nothing responds to a disk read/write for several minutes. The clock still runs & the CPU % is very low.
I assumed it was the hard drive & bought Spinrite as a last test as the drive had passed chkdsk constantly. Spinrite found no problem at all, not a single fault despite running it for about 12 hours on a maintenance run.
Here's an idea of the erratic schedule:
Day 1 freeze 16:00, 19.37
Day 2 freeze 09:12, 15:11
Day 3 freeze 10:16, 12:06, 13:30
Day 4 freeze 11:14, 13.08, 14.24
I try running resource monitor with the disk page up, but am finding it hard to diagnose the problem from it. Anything that shows up in disk monitor, I disable & try another test for a day.
I have disabled (one at a time):
Prevx, Acronis backup, desktop gadgets, search indexing, Skype, Google update.
I have installed the latest nic & graphics drivers. I have the latest chipset drivers & BIOS.
Full virus scans with Prevx, Malwarebytes. No malware symptoms.
Can anyone offer some advice please?
Windows 7 32bit Ultimate
Intel DP35DP, Intel Core 2 Quad Q9650, Crucial 4gb DDR2-1066, XFX HD5750 1gb, WD Velociraptor 300gb GLFS, Enermax Liberty 620W
Connected to Microsoft SBS 2003 Premium
Running apps: Skype, Trillian, BOINC, Prevx, ISA client Firewall, Winpatrol
Regular cleans using Ccleaner for temp & logs, JV16 Tools for registry, Defraggler for fragmentation.
Browsing using Firefox 4 with NoScript.