ram upgrade can i use compatibilty

how do you delete what?

re ie9 - try holding down alt, and check view settings.

as an aside - A fresh install would probably cure all problems, and it would be a good idea to create recovery discs at some point

To create a set of recovery discs:
1. Select Start > All Programs > HP Backup & Recovery > Backup & Recovery Manager.
2. Click Next.
3. Click Create a set of recovery discs (Recommended), and then click Next.
4. Follow the on-screen instructions

to disable windows defender on vista or windows 7 - from the start menu, windows defender, tools, options, untick use real-time protection, under administrator options, untick use windows defender and untick allow everyone to use windows defender, click save to save settings

control panel, programs and features, uninstall google toolbar/google update/ie window maximizer unless you need it.

start, services.msc - double click the adobe updater services, and disable it.

If you have a java icon in control panel, click it, advanced, misc - untick java quick starter, and untick place icon in system tray.

it might run better without kaspersky, you could use the free version of avast instead.

alt in IE brings up the file/edit/tools menu, where you can change the look of IE, and what happens when you open new tabs, under tools, internet options, tabs, settings.