BSOD And Chkdsk Won't Run Now (very Long)

1.For the past week been having issue with rpcnet.exe or something like that..i think it's a file that is included with dell lojack but I never paid for it so don't know why it's there. My Anvir program said new startup program with rpcnet was trying to load and I hit quarantine or delete every boot up. it seemed to appear every time I rebooted for days then and then just disappeared after a few more days

2.Being worried, I downloaded at least 3 other malware programs and ran them...no issues...

3.Last week updated to zonealarm 10.2 from 10.1. it now includes antivirus so I had to disable it because I use essentials...it took a reboot to 'take' but the antivirus did remain off then

4.As I told you before, that malwarebyte program was apparently doing more than ZA but I decided not to use it for real time protection and disabled it. All manual scans showed all ok

5.Thinking comodo may be a better firewall that ZA, I installed it yesterday morning. It installed ok but then crashed upon reboot to complete the install

6.In safe mode I tried to do system restore and it said C disk structure error and would I like to run chkdisk upon reboot..yes!

7.For the next few hours I tried every trick I could...wouldn't do a chkdsk..tried last good known configuration upon boot, tried the command prompt as an administrator..did chkdsk /f and /r and even one other one..never ran..ever..not even on reboot. Thing is I could stay in safe mode and surf the web and try to find answers with no worries..no errors at all. But when I rebooted, BSOD..the error codes I got lead to some sort of disk error..i couldn't defrag nor chkdsk. Heck the C drive still to this day doesnst show up as being able to be defragged but I only have 2 gigs of memory left on the machine so it probably cant be?

8.I uninstalled comodo with a generic uninstaller but since it crashed after I installed it, I thought comodo was the problem
9.I decided to do msconfig and then uncheck a bunch of things starting up..i unchecked so many when I rebooted it actually did work and boot OK! I also meanwhile uninstalled ZA to rule that out as an issue.

10.When I booted up, Anvir asked me about 75 things starting up with the machine, I saw most were Microsoft but got tired of hitting ACCEPT after about 30. So left the rest turned off for now.

11.Reinstalled ZA 10.2 and got immediate BSOD upon completion of install. I'm assuming this means it wasn't my other programs at and it just coincidentally worked because I deleted ZA and then unchecked startup items at the same time.

12.Went to safe mode and removed ZA

13.Reinstalled ZA 10.1 and got immediate BSOD

14.Deleted ZA and all works well. It HAS to be ZA that is the issue..correct?

15.Still cannot run chkdsk but the C drive does show up under the disk management screen

16.I also ran some other scan (SFS file check??) and that said was errors but I cant fix them since no chkdsk The machine seems to be back to "normal" now, I have just windows firewall on plus essentials antivirus. But I do want another firewall. I just think something is really fishy that I cannot run chkdsk and confirm the disk is ok. I cant find my dell windows 7 recovery disk but I have a full XP disk and tried to run it to get to recovery console but I got a BSOD with that disk and never got into it even. So any ideas what would prevent chkdsk from running even though I hit yes when it asks me to do it upon reboot? I cannot get over the nagging feeling something else is wrong here. one time I did get something about a dirty 'something' being set on the machine so I'm not sure if that's whats preventing me from running chkdisk.