My work laptop has been driving me a little crazy of late. It's a dual core i7-2620M with 8 GB of ram, Win7 x64. It has been running slow for no reason I can tell. It gets into moods where every click becomes agonizing. Menus can take 5-10 seconds to appear. Apps take forever to launch and shut down. I have to click and let go of the mouse or else I'll mess up whatever eventually responds to my input.
It takes about 15 minutes after a reboot to become usable and another 5 minutes or so to settle down.
CPU processes from all users don't seem taxed. It can be 0-10% CPU when it occurs. When the CPU does get cranking it seems fast.
Disk use can be almost idle. The disk is about 50% full and diagnostics show no problems.
Network bandwidth is fine. It's on gigabit and transfers seem to be okay.
There are no viruses/malware.
I've even gone through msconfig and removed most of the non Microsoft services and startups.
BIOS has been updated.
Any bench marking utilities seem spot on but the laptop is a dog.
I doubt anyone will have any ideas but I figure it can't hurt to ask. Usually if I get to the point where I'm asking for ideas nobody else seems to know either :).
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