PC freezing and Error 403

Hi,

We've recently got a BT home hub and I have connected my PC to it wirelessly. A few days after we got it my computer started freezing after about half an hour or so of normal operation. Each time it did this the only thing I could do was turn it off at the switch. Also, every time I tried to download something from a website, I started getting Error 403. These are not password protected pages and I could access them with no problems on our previous ISP. I have changed the wireless adapter I was using, in case that was part of the problem. but I'm still having the same problems. The only information I've been able to find so far has suggested there isn't much I can do about this.

My boyfriend is connected to the same hub with his laptop and he isn't having any of these problems.

I'm hoping one of you really well informed people out there has some suggestions.

Thanks.

A few days after we got it my computer started freezing after about half an hour or so of normal operation.

Its probably a good time to disconnect the system unit and take it outside and blow out the dust bunnies with a canister of compressed air.

A clean dry long haired bristled paint brush can be used to remove the dust bunnies from the CPU fan and the power supply fan and cage.

http://www.techspot.com/vb/topic26402.html

http://www.guardian.co.uk/technology/2006/...hnologysection4

http://videos.howstuffworks.com/labratstv/...puter-video.htm <== 13 min. video

SpeedFan is a good application to monitor system temperatures:

http://www.almico.com/speedfan.php

May also be advisable to post a Hijackthis log in the appropriate part of this forum just to be sure it's not malware related.

Its probably a good time to disconnect the system unit and take it outside and blow out the dust bunnies with a canister of compressed air.

A clean dry long haired bristled paint brush can be used to remove the dust bunnies from the CPU fan and the power supply fan and cage.

Since the problem is time related, cleaning is a good idea.

Also, while you're dusting it out, manually rotate the fan blade(s). Sometimes the bearings can start to freeze up. If the blade doesn't rotate freely, replace the fan.