Computer is slow, laggy

[Skorpionas]

Hello,
About moth ago, my computer starded to work slowlys. I can't listen music normally, it goes lag as when as I try to do something else in screen.(even some times sound goes out, I had to overload song or clip). I cant play games. HDD temperature holds on ~45 C" and other details seems to be cold every time i use PC. I have reinstalled windows few times, formated C (OS) drive but no possitive results.. Windows and av (nod32) are updated. CPU sometimes raises up to ~50%, and descends after a second and it repeats frequently. Sometimes my mouse dissapears and emerges after few seconds... Sometimes PC just freezes, I have to do rr.

I have replaced graphic card, new supply unit, I have checked ram's wiht memtest68 - 0 errors, I have regenerated HDD - 0 bad sectors, I have done complete scan with AV - some "pacific viruses". I have cleaned registry with some programs, Cleaned cookies and other sh** with CCleaner. I have defragmented both particions.

For example now, after troubelsome ~1 hour, PC works good, but I know, this is not for a long.

Computer summary

Computer Type ACPI Multiprocessor PC
Operating System Microsoft Windows XP Professional
OS Service Pack Service Pack 3
Internet Explorer 6.0.2900.5512
DirectX 4.09.00.0904 (DirectX 9.0c)
Computer Name CHANGEME
User Name *****
Logon Domain CHANGEME
Date / Time 2009-07-02 / 20:21

Motherboard
CPU Type Intel Pentium 4, 3000 MHz (15 x 200)
Motherboard Name ASRock P4i65PE (5 PCI, 1 AGP, 4 DDR DIMM, Audio, LAN)
Motherboard Chipset Intel Springdale i865PE
System Memory 512 MB (PC3200 DDR SDRAM)
DIMM2: 256 MB PC3200 DDR SDRAM (3.0-4-4-8 @ 200 MHz) (2.5-3-3-7 @ 166 MHz) (2.0-3-3-6 @ 133 MHz)
DIMM3: 256 MB PC3200 DDR SDRAM (3.0-4-4-8 @ 200 MHz) (2.5-3-3-7 @ 166 MHz) (2.0-3-3-6 @ 133 MHz)
BIOS Type AMI (10/26/04)
Communication Port Communications Port (COM1)

Display
Video Adapter NVIDIA GeForce 7300 GT (256 MB)
3D Accelerator nVIDIA GeForce 7300 GT AGP
Monitor Samsung SyncMaster 940N/MagicSyncMaster CX915N/CX916N/CX917N [19" LCD] (HMBP908434)

Multimedia
Audio Adapter Realtek ALC850 @ Intel 82801EB ICH5 - AC'97 Audio Controller [A-2/A-3]

Storage
IDE Controller Intel(R) 82801EB Ultra ATA Storage Controllers - 24D1
IDE Controller Intel(R) 82801EB Ultra ATA Storage Controllers - 24DB
Storage Controller APDP78KS IDE Controller
Floppy Drive Floppy disk drive
Disk Drive WDC WD1600JS-00MHB0 (149 GB, IDE)
Optical Drive HL-DT-ST DVDRAM GSA-4165B (DVD+R9:4x, DVD-R9:4x, DVD+RW:16x/8x, DVD-RW:16x/6x, DVD-RAM:5x, DVD-ROM:16x, CD:40x/32x/48x DVD+RW/DVD-RW/DVD-RAM)
Optical Drive TWZQZQ P6ZWDQJ85 SCSI CdRom Device
SMART Hard Disks Status OK

Partitions
C: (NTFS) 19077 MB (15497 MB free)
D: (NTFS) 130.4 GB (34.6 GB free)
Total Size 149.0 GB (49.8 GB free)

Input
Keyboard HID Keyboard Device
Mouse HID-compliant mouse
Mouse Microsoft PS/2 Mouse

Network
Primary IP Address **************
Primary MAC Address 00-13-8F-00-BC-28
Network Adapter Realtek RTL8139/810x Family Fast Ethernet NIC (88.222.124.230)

Peripherals
USB1 Controller Intel 82801EB ICH5 - USB Controller [A-2/A-3]
USB1 Controller Intel 82801EB ICH5 - USB Controller [A-2/A-3]
USB1 Controller Intel 82801EB ICH5 - USB Controller [A-2/A-3]
USB1 Controller Intel 82801EB ICH5 - USB Controller [A-2/A-3]
USB2 Controller Intel 82801EB ICH5 - Enhanced USB2 Controller [A-2/A-3]
USB Device USB Composite Device
USB Device USB Human Interface Device
USB Device USB Human Interface Device

DMI
DMI BIOS Vendor American Megatrends Inc.
DMI BIOS Version P1.00
DMI System Manufacturer
DMI System Product P4i65PE
DMI System Version 1.00
DMI System Serial Number 00000000
DMI System UUID 00020003-00040005-00060007-00080009
DMI Motherboard Manufacturer
DMI Motherboard Product P4i65PE
DMI Motherboard Version 1.0
DMI Motherboard Serial Number 00000000

Waitting for some expert advices

 

[SNGX1275]

Not sure how expert this advice is, but if you haven't already I would make sure all your drivers are up to date, including chipset drivers. If that does not fix the problem I would get a program (such as speedfan) and make sure your CPU temperature isn't crazy high - CPUs will throttle to slow speeds if they are getting too hot. If your CPU is getting too hot you'll have to remove the heatsink, clean it with a high percentage isopropyl alcohol, then reapply some thermal paste/compound and reseat the heatsink.

 

[aqua]

you said you formated hard drive..but in this case you need to wipe it out...use dban,read instructions.
did you run antivirus.?..malwarebtes?.clean internet traces with something like ccleaner,which havs a registry cleaner too.

 

[SNGX1275]

I don't know that something like dban is necessary here, as long as there was a format done during the Windows install it should be fine. I can't think of anything in the last 8-10 years that would come back after a simple format to reinfest a Windows installation (and I'm not sure I ever have, but I remember rumors of such a thing back in the mid 90s).

If by some small chance it is an actively recurring infection of some sort the most likely candidates I'd guess would be an infected computer on his LAN, or infected external drive that is attached after (or simply an infected internal that isn't being formatted on a clean install of windows).

I don't think it is an infection of any kind though, with the limited information we have now my guess is heat.

 

[Skorpionas]

Thank you for answers,
I have allready changed thermopaste above CPU for a few times during this problem period.
Here is temperatures after 1,5 hour PC usage:

Motherboard 38 °C (100 °F)
CPU 32 °C (90 °F)
Aux 42 °C (108 °F)
GPU 46 °C (115 °F)
HDD WDC WD1600JS-00MHB0 39 °C (102 °F)

I often check heats.
As you see it's OK , and after some 6 hours usage it all would raise slightly.. In my opinion, heat is not the problem. If it would be an a point, PC would'nt be logy at the initially (start) of work.

By the way, I haven't mentioned, when OS still doesn't loaded, sometimes I get black screen, and there is written "check your hardware or software bla bla bla" (I dont remember exactly). And I have to relay my RAM chips to load windows.

 

[Tedster]

https://www.techspot.com/vb/topic53669.html