OK, there is something definitely fundamentally wrong here. Copying to these drives from another drive has nothing to do with networking and so that is out. This is a drive access issue.
The Disk Manager window is pretty clear. You have multiple hard disks with various partitions. The partitions in question have plenty of room on them and no signs of anything going wrong.
Let's start with some basics before we completely reset your machine and force you to reinstall your apps.
First, run Windows Update in case this is a known issue and there is an update for it.
Next, we will reinstall some drivers.
- Hold down the Windows key and press "X".
- Choose Device Manager.
- While in Device Manager, if asked to reboot say no.
- Open Disk drives and remove any drives.
- Open IDE ATA/ATAPI Controllers and Storage Controllers and remove any controllers.
- Reboot
If that doesn't work, check your motherboard manufacturer for updated chipset drivers. Follow their instructions to install them and reboot.
If that does not work, try this:
- Click Start and type "Command".
- Run Command Prompt as Admin.
- Type "sfc /scannow" and hit enter.
- If it reports that it replaced files, test.
- If it reports that it cannot replace files then we have a likely culprit.
- If it reports that it did nothing, then we continue on.
If that does not work, try this:
- Click Start and type "msconfig". Open the System Configuration app.
- On the Boot tab, choose "Safe Mode". Click Apply, then OK.
- Restart the machine.
- Test in Safe Mode.
- When finished, reboot.
Let me know if any of these help or give you unexpected results.