Windows: Unable to access microsoft.com

Can you access all other websites but not microsoft.com? This solution has worked for me.

1. Try opening cmd and issue the command 'ipconfig /flushdns'

See if you can access the microsoft.com now. If not:

2. Go to services (services.msc) and stop the 'DNS client' service.

Hopefully you should be able to access microsoft.com now.

Is PC2 5300 667MHz DDR2 RAM backward compatible for PC2 4200 533MHz DDR2 RAM?

Yes PC2 5300 667MHz RAM is compatible for PC2 4200 533MHz. However when you mix a 667MHz RAM with 533MHz RAM, both will run at 533MHz.

Similarly PC2 6400 800MHz is also designed to be backward compatible.