[ThaVirus]

Ok, so I ran into a virus thing today. Was browsing the web and all of a sudden my comp started telling me my hard drive had failed and all kinds of crazy stuff. So some WindowsHelper thing popped up and began "searching for any problems" and "found" 11 of them. It looked legit and wouldn't let me touch anything else so I clicked OK like a dumbass. Then shit started ****ing up and got even worse.

Anyway, I started the Task Manager and found a couple odd programs running: one of which was "483080805740..." (a bunch of numbers-not accurate) and another "A1Ashfjdhf..." (a bunch of letters-again not accurate). So I ended the processes and was able to open other things in my comp again. After I updated Malware Bytes I ran the check and it found 5 problems (2 of which were the ones already mentioned and the other 3 I didn't recognize). Anyway, I removed them and now I can access all processes of my comp.

Here's the issue: all of my data and files have been wiped out. Since my comp is just for schoolwork, music and browsing the web I didn't have many important files saved in the first place so I'm fine with that. The thing is, when I move the cursor over any of the folders- let's just say Music- all of the information pertaining to it shows up. So it says my Music folder has 9.84 GBs worth of files and when it was created and all of that, but none of it is showing up. All of my songs even exist and play perfectly in iTunes, it's pretty bizarre.

I've been browsing the web on how to restore lost information and am not computer savy enough to figure out their instructions. I haven't run any "System Restore" or "Recovery" programs yet. So my questions to you guys are:
1. Is there anyway to recover all of my "lost" data and files?
2. Since Malware apparently deleted any traces of the virus, is it safe to be browsing on the same comp again? (Which I'm doing now, by the way)
3. I've accessed my credit card/bank accounts and have applied for several jobs on this comp (so I've entered in a lot of my personal information). I have never saved any of this information or any of these passwords (just entered them in and submitted them) so is there anyway that this virus possibly could have stolen any of that info?

***EDIT: As I said earlier, none of the files on the comp were extremely vital to me so I never ran any backup, transferring of the files to an external hard drive, etc. I'm sure that will come back to bite me in the ass now but I figured it was pertinent information for you to help me.