The reason your monitor is in screensaver mode, (Read your other problem too), is there is no video signal coming to it.
This is because the Netbook isn't sending one.
It isn't sending one because apparently you have graphics problems. Problems with graphics hardware.
So no, there is no Sync, or settings to change on the monitor.
(It is Not a video/graphics card. Your laptop uses Integrated Graphics. Intel HD 3000 Graphics )
However the point is moot now. Netbook is being sent in.
Point now is getting the info off the Harddrive, before some geek looses it.
(I'm a computer geek too, so that was no slam)
Remove the Harddrive. Then install it in an external enclosure.
You've seen an external enclosure, if you have seen an external harddrive.
You can buy just that 'outside case', too.
The external enclosure has a USB cable going to it.
The USB cable goes inside the enclosure, and connects to a small circuit board, with an interface on it.
The harddrive plugs into the interface.
The external enclosure comes apart VERY easily. Manufacturers make it easy to open the external enclosure, and install the Harddrive.
Usually a 2 piece case. One screw to open. Remove cover, plug Harddrive in, replace cover.
Plug USB cable into a USB port, on a working computer.
This is one example that will work with your Harddrive,http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3195233&CatId=2783
[Harddrives are measured across their width.
A laptop harddrive is 2.5 inches across in Width. 2-1/2 inches.
A desktop harddrive is 3.5 inches across in Width.
Three technology styles of Harddrive, are presently being used;
1) IDE (PATA),http://en.wikipedia.org/wiki/Parallel_ATA
These two types of Harddrives use mechanical parts. For example a Spindle, Spindle Motor, and Platters,http://computer.howstuffworks.com/hard-disk.htm
No mechanical parts. Just electronic components. (Solid State)
Your laptop uses a 2.5 SATA harddrive ]
I haven't had any direct dealings with this laptop. Or the Aspire V5-171 version.
I see no Service Manual listed.
Searching the internet for Harddrive replacement info though, I ran into that there is a large panel on the Bottom of the Netbook; which has a single Philips head screw in the middle.
Remove the screw, remove the large panel.
This is supposed to be in the User's Guide, but cannot seem to download it right now to see.
It will be in replace the Memory. Ram Memory.
The Harddrive should sit in a compartment area all it's own.
The Harddrive itself will be in a sheet metal Caddy. Harddrive Caddy.
Remove a screw, or screws; to remove Harddrive, and Harddrive Caddy.
Once screw/s are removed, L@@K at the Harddrive.
There should be a piece of 'silk strap', to pull on.
Keeping Harddrive flat, and down in Netbook, pull on the strap; and pull the Harddrive across towards the OUTSIDE of the Netbook.
You are unplugging it.
You DO NOT want to lift straight up on the strap, as you will bend contact pins.
Once the Harddrive is slid over, then lift at an angle; and remove.
Lift up on the Back of the Harddrive.
This is the opposite side of the one that plugs in.
Open the external enclosure case, slide the harddrive in; then close the external enclosure case. (Referring to Tigerdirect example. Other external enclosures will be different)
Plug the USB cable into any working computer's open USB port.
Look in My Computer/Computer. (WinXP/WinVista - Win 7)
The external harddrive will be shown.
DOUBLE-click on the drive letter it is next to.
Have problems with that post back in a Comment.
Your Netbook, is supposed to be just an ACER Aspire V5-171 series of Notebook PC; with a Chrome logo on it.
For additional questions please post in a Comment.