Hi Karen,
The best non-techie thing to do is get an external Hard diskand copy all your wanted stuff over.
I dont like the sound of checkdisk fixing a .pst file. I would be copying the .pst file asap to a flash drive or external disk just to make sure it is backed up.
If you copy files, instead of actually running a backup software, you have a better chance to get most or all of your wanted files copied. Running a backup generally means that the whole backup needs to work to be successful, and it would take a certain level of experience\IT Know how to get around any issues... which you sound like you dont want to deal with.
Other people may not agree and tell you to clone or image the disk, but I feel even this can get quite "techie" and copying is quite a bit easier.
After you have everything you want to save safely on an external disk, steps would be:
1)get new drive
2)remove old drive and
put away in a static-safe bag(the one the new drive came in is perfect)3) install new drive
4)install Operating system
5)install chipset driver, other motherboard drivers, then other peripheral drivers such as printer
6)update OS by windows update
7)install any software
8.)put back your files from your backup.
Do not do what I have seen alot:
Dont delete off the old disk because you think you have your files
Do not keep using it for replacing on to new drive, use the backed up files
DO keep it safe, as your skill level may change, and you could also think of other files you need that you didnt know of before.
If you follow this, you should not lose anything significant, as it looks like the notification is coming, but system is working.
Feel free to ask anything at all during process, so you dont lose data.
Cheers and good luck
PS, you earn a brownie point for trying to help out your husband
