1. How long since you used the canned air?
2. Did you reset the DMA channel to DMA from PIO? (it's a XP thing. After this many years, I find most know about this.)
In closing I can't find much about this model. Given the age it may be running at it's normal speed?
first here are my specs :
OS Version: Microsoft Windows XP Professional, Service Pack 3, 32 bit
Processor: Intel(R) Core(TM)2 CPU T5500 @ 1.66GHz, x86 Family 6 Model 15 Stepping 6
Processor Count: 2
RAM: 2038 Mb
Graphics Card: ConfigMgr Remote Control Driver, 128 Mb
Motherboard: LENOVO, 1951FDG
Antivirus: avast! Antivirus
Lately,well,since i removed symantec endpoint sue to many program failures and not detecting malware and viruses i switched to avast! and since then (and sometimes b4 also) my laptop is very slow,it take s about 8 sec. to open a simple png file and video file is a lot more,browsers are slow and when using 2 browsers at once (i use FF and chrome) it ridiculously slow,i dont use any firewall except windows firewall and i'm checking regularly for maleware using Malwarebytes and adwcleaner and windows update is automatic and all updated are installed so please if anyone can help!