Why don't you post the issue here. There are a lot of knowledgeable members here that can help you.
Bit complex. To resolve it you will need to log into the server. But here goes.
I have a customer in France that I developed a system for. They have been running for 4 years on Server 2003 32bit. So now they bought a new 16 core mofo Dell server with Server 2008 64bit. They have an IT company in Paris that does all their admin.
2 months ago we wanted to migrate to the new server. The IT company installed everything and I moved my stuff across. But a few days after them doing their stuff the server just started slowing down to a dog. Luckily we have not moved the users across. The IT company just could not figure out what the problem was and blamed my software. But my software was running for 4 years w/o issue and also runs fine on their other 64bit environment. And the server is slow without my software even running. Anyway so they sent their guy out to Normandy where the server is to reinstall everything.
FFwd to 12 May 2014. Server running blazingly fast (still not live). I install all my stuff, restore the database from the old server and everything runs hunky dory. We move the users across. Come yesterday afternoon, the server again slow as a dog. Unusable. But in the mean time they installed a couple of things. Office 2010 Malware bytes, Adobe PDF, etc. Now the blame game starts again.
What I have ascertained is that some how the disk access performance has DRASTICALLY dropped to about 10th of what it was. On their old server a DB restore takes 2:25 (2.5 minutes). On the new server it takes 40 minutes! When I log in and I am the only user, the taskmgr says around 14% CPU. Without me running any apps. So their IT company is out of ideas and me too.
So if there are any competent admins here that can fix the problem or at least diagnose, please help. I am prepared to fork out some money if we get it right. If need be you can log into the server and scratch around...