Re: Computer locking up
can you get into safe mode when it comes up?, if so try running a AV scan to see if it picks anything up, also when you looked at the heat sinc was there any dust between the panels? if so clean them out or blow them out carefully.
You could also try removing you graphics card and clean it and put it back, I'm quite concerned that it wont allow you to run the windows CD that is un usual.
Compaq Presario CQ5305K-m Intel® Pentium® Dual Core E5300 (2.6 GHz), Windows® 7 Home Premium 64 bit, 2048 MB , Hard drive: 320 Gb, with 18.5 Widescreen
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