I downloaded windows 7 from my MSDNAA e-academy. After it downloads it then goes to unpacking. But at the very beginning the progress bar is stuck on checking file CRC(the very first bar out of the whole process). Tried downloading multiple times and on two computers thinking it was a faulty download but same response. Is it just a bad file? Please help
Solved Windows 7 professional install stuck on checking file CRC?
- Thread starter sellejr2
- Start date
Frostmourne
Banned
CRC is a cyclic redundacy check. The file might be physically corrupt, or the donwload might be corrupting it. Are you using wireless or a wired connection? Finally try a different extraction program. 7-zip sometimes fumbles on .rar archives, so try WinRar or Peazip.
My Computer
System One
-
- Manufacturer/Model
- Sony Vaio Z46GDU
- CPU
- [email protected] w/6MB L2 cache 1066MHz FSB
- Memory
- 6GB DDR3 1066MHz SDRAM
- Graphics Card(s)
- 9300M GS 256MB + Intel Integrated 4500MHD
- Monitor(s) Displays
- 13.1" WXGA True Colour Tough
- Screen Resolution
- 1600x900
- Hard Drives
- 320GB SATA 7200RPM
- Internet Speed
- 1MB/s
Hey thanks for the reply, sorry im new to this forum. Yes I downloaded through the wireless router. I also attempted to just download another file(vista) just to make sure it wasnt that one windows 7 file, but same problem. Both are obviously an .SDC file, do you think i should give peazip a try?
So do you think I should try wired? Or maybe straight into the cable modem, maybe the firewall has some effect?
So do you think I should try wired? Or maybe straight into the cable modem, maybe the firewall has some effect?
My Computer
Hey thanks for the reply, sorry im new to this forum. Yes I downloaded through the wireless router. I also attempted to just download another file(vista) just to make sure it wasnt that one windows 7 file, but same problem. Both are obviously an .SDC file, do you think i should give peazip a try?
So do you think I should try wired? Or maybe straight into the cable modem, maybe the firewall has some effect?
So do you think I should try wired? Or maybe straight into the cable modem, maybe the firewall has some effect?
My Computer
Frostmourne
Banned
Try wired. .sdc file?
My Computer
System One
-
- Manufacturer/Model
- Sony Vaio Z46GDU
- CPU
- [email protected] w/6MB L2 cache 1066MHz FSB
- Memory
- 6GB DDR3 1066MHz SDRAM
- Graphics Card(s)
- 9300M GS 256MB + Intel Integrated 4500MHD
- Monitor(s) Displays
- 13.1" WXGA True Colour Tough
- Screen Resolution
- 1600x900
- Hard Drives
- 320GB SATA 7200RPM
- Internet Speed
- 1MB/s
FROSTMOURNE you are amazing! Plugged computer into ethernet rather than wifi and sure enough it worked flawlessly. Thank you so much.
Just a heads up for people looking for an answer the unpacking problem, plug their computer in to the router or etc. Turn off the wireless on computer and REDOWNLOAD it
thanks again man!
Just a heads up for people looking for an answer the unpacking problem, plug their computer in to the router or etc. Turn off the wireless on computer and REDOWNLOAD it
thanks again man!
My Computer
Downloading from ethernet did not solve this problem. The loading screen still keeps checking the CRC over and over again. This is an unpacker from MSDNAA and there might be no other program that can unpack this sdc file. Anyone knows how to fix this problem?
My Computer
NotePost moved to Chillout Room since it is off topic of Vista. We have a sister site Seven Forums that you can get more specific help with Windows 7 at though. 
I hope you get a solution soon,
Shawn
My Computers
System One System Two
-
- Operating System
- Windows 10 Pro 64-bit
- Manufacturer/Model
- Custom
- CPU
- Intel i7-8700K 5 GHz
- Motherboard
- ASUS ROG Maximus XI Formula Z390
- Memory
- 64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
- Graphics Card(s)
- ASUS ROG-STRIX-GTX1080TI-O11G-GAMING
- Sound Card
- Integrated Digital Audio (S/PDIF)
- Monitor(s) Displays
- 2 x Samsung Odyssey G7 27"
- Screen Resolution
- 2560x1440
- Hard Drives
- 1TB Samsung 990 PRO M.2,
4TB Samsung 990 PRO PRO M.2,
8TB WD MyCloudEX2Ultra NAS
- PSU
- Seasonic Prime Titanium 850W
- Case
- Thermaltake Core P3
- Cooling
- Corsair Hydro H115i
- Keyboard
- Logitech wireless K800
- Mouse
- Logitech MX Master 3
- Internet Speed
- 1 Gb/s Download and 35 Mb/s Upload
- Other Info
- Logitech Z625 speaker system,
Logitech BRIO 4K Pro webcam,
HP Color LaserJet Pro MFP M477fdn,
APC SMART-UPS RT 1000 XL - SURT1000XLI,
Galaxy S23 Plus phone
-
- Operating System
- Windows 10 Pro
- Manufacturer/Model
- HP Envy Y0F94AV
- CPU
- i7-7500U @ 2.70 GHz
- Memory
- 16 GB DDR4-2133
- Graphics card(s)
- NVIDIA GeForce 940MX
- Sound Card
- Conexant ISST Audio
- Monitor(s) Displays
- 17.3" UHD IPS touch
- Screen Resolution
- 3480 x 2160
- Hard Drives
- 512 GB M.2 SSD
Found a sollution to the problem. Go download unpacksdc from http://imagi.pl/files/unpacksdc.zip
- move this unpacksdc.exe file into same directory as your sdc file
- open Run, then type cmd
- type cd <directory of your sdc file> (without the <>)
- type
UnpackSDC <file name.sdc> <where you want it to be unpacked> skipcrc
that should fix the problem.
- move this unpacksdc.exe file into same directory as your sdc file
- open Run, then type cmd
- type cd <directory of your sdc file> (without the <>)
- type
UnpackSDC <file name.sdc> <where you want it to be unpacked> skipcrc
that should fix the problem.
My Computer
I have found out the file laid out from MSDN is corrupt and won't work properly. Unpacking it worked well with the unpacksdc.exe from imagi.pl.
My Computer
Same problem after downloading on a very stable connection.
Does the installation work after unpacking with the unpacksdc considering the CRC check fails?
EDIT: The .iso doesn't mount and can't be opened by WinRAR due to being damaged, I'm going to try to download it a couple more times but I've never had problems with any other MSDN Academy product so the problem is more than likely on their side.
Does the installation work after unpacking with the unpacksdc considering the CRC check fails?
EDIT: The .iso doesn't mount and can't be opened by WinRAR due to being damaged, I'm going to try to download it a couple more times but I've never had problems with any other MSDN Academy product so the problem is more than likely on their side.
Last edited:
My Computer
the iso file was damaged after unpacking it with unpacksdc so it won't work. call your MSDN section and ask for a cd with win7 they can give you.