Slow drive performance, freezing computer

[mk15mr2]

My computer goes through random freezing periods. A complete freeze with no response will sometimes happen in windows and even in P.O.S.T. It will do it for no particular reason. No pattern seems to be associated with the problem. Then mysteriously the problem will vanish for weeks. I've also noticed slow performance on drive benchmarks.

Here are the test results of the two raided drives:
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CrystalDiskMark 3.0.2 (C) 2007-2013 hiyohiyo
Crystal Dew World : http://crystalmark.info/
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* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 87.294 MB/s
Sequential Write : 111.095 MB/s
Random Read 512KB : 18.251 MB/s
Random Write 512KB : 45.107 MB/s
Random Read 4KB (QD=1) : 0.348 MB/s [ 85.0 IOPS]
Random Write 4KB (QD=1) : 1.639 MB/s [ 400.1 IOPS]
Random Read 4KB (QD=32) : 0.343 MB/s [ 83.8 IOPS]
Random Write 4KB (QD=32) : 1.577 MB/s [ 385.0 IOPS]

Test : 100 MB [C: 18.7% (87.2/465.8 GB)] (x1)
Date : 2013/07/08 19:03:34
OS : Windows XP Professional SP3 [5.1 Build 2600] (x86)

They show similar performance with the single drive. I remember in the past i was getting 150MB/s read with the raided drives. Now it is cut quite a bit. It seems abnormally slow but maybe I'm wrong.

System Info: processor = core2 duo e8500, motherboard = p5ne-sli, memory = ocz 4 chips pc2-6400 4GB, drives = 2 seagate st3250410as in raid0 and 1 seagate st3320620as by itself. video card = xfx gtx260 sound card = creative xfi fatality.

Steps I've taken in order:
Full virus scan from windows system and rescue disk using norton 360 and avira. Full malware scan using malware bytes, malware beta root kit and spybot search and destroy. Full defrag using contig, defraggler and windows. Checked on any extra running services and processes. Updated windows, bios, video card, sound card, chipset drivers. Used cc cleaner to clean registry. defragged registry using tuneup utilities. Used canned air to blow out system. System has been running on battery backup unit with cleanpower and auto voltage correction for many years. Problem happens even in a fresh install of windows 7 on an ssd. However the ssd gets much better benchmarks. Ran memory test on memory with like 10 passes no failures.

Any other suggestions? I'm thinking it is either motherboard or drive problems. How do I narrow it down?

 

[mk15mr2]

This is the indication that your hard drive may start to have problem, you'd better back up all your data, and consider to change the hard drive.

So i created an image of the drives. The total size of the combined drives was 470 gigs after format. I placed the image on a 120 gig solid state since I was only using about 80 gigs of data. It boots up great and runs faster by far. So far no freezing. I think my problem is resolved. But once xp sees the drive it installs some kind of driver for it and after a reboot it has a bsod with partmgr.sys. If i reboot and use "last known good settings" it boots right up and works fine until of course windows sees the drive and installs that driver again. This repeats endlessly. As long as I don't let windows reboot it never has a problem. Is there a solution to this partmgr.sys file? I would assume it is some kind of incompatibility or because I placed an image from a raided set of drives on a single ssd?