I need some help here

Ok I had encounter a few problems
1: I tried to delete a folder but an error message display
(Cant delete foldername:foldername is not empty)*WTF*!!!!
I tried double click foldername to check what was inside
But then.... a message
(The Drive Disk D is not formated.
Do you want to format now?)What the Hell House!
In the end I cant format it.. Or should i say it wont let me format it says that
I am still running the program WHILE ONLY MY DESKTOP IS THE ONLY RUNNING.

NEXT UP
2:Computer CRASH while installing game
Well I try to install an online game but when it reach till a certain % The infamous
BSOD came and reboot my whole Mthfking system
So guys
Can you guide me to fix this things up please
or i am missing something????

This looks serious, I say you should try reinstalling Windows.

Well i like reformat once not long ago
T_T
Now this crap came up
I am afraid that the problem lies with my backup/external hard drive

Run a complete hard drive scan. I'm suspecting a huge bad sector~

Also this.. is your Windows pirated or original?

Do a system restore for a week back. If that doesn't fix the problem than im afraid your hard drive might be dying.

Thx ^_^ That is one problem solve thanks a million +Rep just for that
Cus i am in fact a computer idiot =p

Its original

i think ur problem made by virus or crus in ur operating system, but it can be ur HDD ...
first u must scan with an update anti virus, or u must reinstall ur OS or u must buy a new HDD ...
second that problem because ur online game program crash,so u must uninstall it pr u can use CCleaner for uninstall it and clean up ur register ...
u can download that program @ http://www.piriform.com/

Hmm
I Run and install the game to check one more time to get the error report
They say something about
Mini.dmp sysdata.xml

(go find somemore errors out)

you got blue screen right? err.. may i ask, what RAM and harddisk is you're using right now? if after disk clean and it still goes BSoD, then you have to think of buying new HDD.

Yep the BSOD is gone *Yay from me to you*
But some data are still corrupt >.>
Anyway the major problem is solve.
Thanks you all for guiding this whole time.*Sincerely Thankful*