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Error Steam Back Up


New Member
Mar 30, 2012
1 (0.00/day)
Hi guys!

So I read a topic that said that if you were gonna format your pc, you could back up steam games manually by backing up STEAM APPS, so that's what I did.

When my OS was up again, I installed Steam and replace the Steam apps folder, (THE GAME IS MODERN WARFARE 3 by the way) click the multiplayer on my library that appear INSTALLED, started to update vc redist, directx, and then preparing to start and closes just like it used to do, but then, nothing happens..

The single player works fine, I tried going into singleplayer and then to multiplayer from the menu but no luck (It went back to steam and did the same procedure)

I have a feeling that there's a solution, since I've seen everybody agrees to back up the Steam apps folder (I also have the FULL steam folder backed up just in case)

Please, I know you guys are smart to figure this out, I'm new to steam so thats why I have no clue.

And what's even worse that when I go to single player, and put the clicker on Multiplayer it tells me some details of my profile, like how long i've played and how many % of completition do i have. So I know it's there.

The reason I went through all this trouble is that I have a slow connection, like 6mb connection and would take like 24 hours to download, or more.

Thank you so much in advance!
Mar 31, 2007
1,895 (0.48/day)
ontario canada
System Name home brew
Processor Intel Corei7 3770K OC @ 4.5Ghz
Motherboard ASUS P8Z77-V
Cooling Corsair H100
Memory 16GB DDR3 1600 GSKILL
Video Card(s) Powercolor Radeon 7970, MSI Radeon 7970
Storage Mushkin Chronos Deluxe 240gb. 2 TB Hdd.
Display(s) 3x24inch Dell Ultra IPS
Case CM storm trooper
Power Supply Antec Quattro OC ed. 1200w
Software Windows 7 Business x64
Benchmark Scores vantage: P43089
ive downloaded steam games over a 6mb connection. usually done overnight. The way to backup your steam games is to right click it in the steam library and perform the backup function. Copy that to an external drive, or a disc. if a disc though, copy it to your harddrive before installing.


Senior Monkey Moderator
Feb 6, 2007
13,817 (3.45/day)
Cheeseland (Wisconsin, USA)
^^^Mars is right. That's what I would try first.

Right click on game in library on Steam, select properties, go to local files tab, click "Verify Integrity of Game Cache".

If it finds a problem it will redownload what it needs which may take awhile for you, but it is a lot quicker than downloading the whole game.