When I put my computer back on my McAfee brought up - Buffer Overflow - C:\\Windows\system32\DllHost.exe
It blocked any action, but I'm slightly confused by this, (as I'm far from being technically minded) any ideas/help would be appreciated, I'm assuming I've picked up some malware, but hoping that it's not the case.
Cheers,
Skully.
how far did it get in the start up procedure? have you tried starting it in safe mode?
Whatever you do, do not delete anything in your System32 folder.
It started up just fine, everything seems to be working normally (at the moment) and I think my McAfee has stopped any unauthorised changes etc...but I'm a little worried that this could be something harmful I've picked up, I've done a complete scan with both my McAfee and Windows Defender, they aren't picking up anything unusual, but I'm aware that they can't detect every malicious program.
All I found was
this while searching for you, but it may be of some help.
all i can suggest is make sure you anti virus stuff is up to date,
Sorry to hear about your problems mate, all I can do is to repeat what the others have said. I would direct you McAfee web site and knowledge base. My own Av( not Mcafee) offer Tech support including Tel Phone, never used it so not sure how good cost etc..Not sure if Mcafee offer Tech Support by t/p or email?
Anyway sorry couldnt be more help.. Good Luck
swed Wrote:Look around here: http://community.mcafee.com/search.php?searchid=5556246
In particular user "Ex_Brit McAfee Maniac" answers offer !
Good luck ! 
A very helpful link, thanks mate, I'm hoping that his advice will work, I've already found and removed 5 adware items, so it looks quite promising
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Thanks everyone, you're a great bunch
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[Edit - swed thank you mate, I've just restarted my computer and Ex_Brit's advice has worked, problem solved!]