The credit card number I use online was stolen and now I am afraid to check my bank acct or anything from my computer. How can I make my computer safe and secure again?

TOSHIBA ConfigFree
TOSHIBA Direct Disc Writer
TOSHIBA PC Diagnostic Tool
TOSHIBA Power Saver
TOSHIBA Software Modem
TOSHIBA Speech System Applications
TOSHIBA Speech System SR Engine(U.S.) Version1.0
TOSHIBA Speech System TTS Engine(U.S.) Version1.0
TOSHIBA Touchpad Utility
TOSHIBA Utility
TOSHIBA Zooming Utility

these are all the Toshiba programs on my computer. I know that I use some of them, but most of them say "Used: Rarely" so I’m wondering which ones I can get rid of, and I am especially wondering what TOSHIBA ConfigFree is, since it is the largest (27.66MB)

But it won’t connect to the internet using dsl connection.what drivers do I need? Where do I go to get them?

On my Acer Aspire 4250 laptop my screen went black and a "Windows Error Recovery" message appears, it says "windows failed to start. A recent hardware or software change might be the cause" and when I tried the Startup Repair it wouldn’t work and I couldn’t reformat it either. How do I fix it without a disk?