I have my HP psc1350 connected to my desktop PC (Windows 7) via USB and my laptop (Windows 8.1) can print to that printer over both the LAN and WiFi. I can also used the scanner from the Desktop machine. My problems is that when I attempt to use the scanner from the Laptop I get a message is the Scanner turned on?
I also tried to reload the drivers for the all in one on to the laptop and again the installer is not able to locate the device even when I tick the it's on a LAN box. I had this problem with windows 7 and now I have it with Windows 8.1.
I have tried with the built in Scan Programme and Microsoft Office document scanning. Each time I states no compatible scanner found, load software.
How can I over come this?
I haven't heard of (which isn't to say it isn't possible) the ability to access a scanner from multiple PCs attached to the network. My set up sees me able to print from any device - but I can scan from only one, the PC to which the scanner is directly connected. I sense that's your problem - the laptop is looking for a physical connection.
I have an HP Photosmart Plus 6520 multifunction printer connected to my main PC. I have laptops that print to that printer via wireless. I have been able to do this on older HP multifunction printers.
I use Word or Excel on my laptops and scan using the HP printer whilst in those applications by - holding down the Alt Key and pressing in turn the letters I, S and then P. This gives you the option to scan wirelessly.
Not very convenient, but if the scanner drivers are installed on the laptop, you could plug it into the scanner direct via USB whist temporarily disconnecting from the desktop. I do not think wireless would do it, I may be wrong.
Wireless will do it through using Word or Excel and then copy/paste to desired destination. I have done it many times. That is on the basis that the laptop does have all of the printer functions installed on it.