Ok I should be able to help with everything apart from the Voice Recognition since I don't have any Knowledge of that area.For the Narrator problem follow this to turn it off - Control Panel > Ease Of Access > Ease Of Access CentreNow open the section "Use the computer without display"And Untick the 3 tickboxes then click "Apply" and then click "Save"
As for the Boot up problem I have a feeling your 1GB RAM maybe causing the slow boot up because Vista will use about 1GB just to run so maybe a New RAM Card may help although take note your Toshiba Laptop Motherboard can only support 2GB RAM (Max). Or it could be related to your previous Virus problem try downloading and running MalwareBytes if you can get on your Laptop.You could also try a simple System Restore back to before the Viruses got your Laptop, Although another thought in my head is about that Antivirus Plus from what I read it takes over the Windows File "rundll32.exe" which runs Windows DLL Files I think e.g. Probably used during the System Boot up.If these suggestions don't work then probably as a last resort (Unless others can suggest something else) use the Recovery Disks or Format and Reinstall Vista.
I don't think it is advised to run more than one Anti-Virus Software because the Monitor Scanners they include can sometimes conflict causing problems running them and problems with the Computer as well, It's up to you what Anti-Virus you do install but I would say just use one, McAfee is probably the better of the 2 since AVG can hog system resources it's the main reason I switched from AVG to Avast (The Anti-Virus Software I use now).
I've used Driver Zone before if Device Drivers are missing, Here is the link and it's Free 🙂 - http://driverzone.com/
Although I'll be stating obvious things here these are probably the best things to do to speed up a Computer.1. Uninstall unnecessary programs that you don't use a lot or anymore.2. Run a Disk Defrag