These are some common tools used to work on this device. You might not need every tool for every procedure.
For help on any trouble you may be experiencing, here is the HP Streams troubleshooting page.
Background and Identification
The HP Stream 11-y012nr is a budget laptop released in 2015 by HP and comes loaded with Windows 10 Home 64. You can find the model number at the bottom of the laptop. The Stream 11-y012nr weighs in at 1.16 kg and is 30 x 20.57 x 1.8 cm, making it easy to be carried around. It is powered by a 2-cell, 37.69 Watt-hour lithium-ion battery. It utilizes a 1.6 GHz (up to 2.48 GHz) 2 MB cache and 2-core processor and contains a 4 GB DDR3L-1600 SDRAM.
The Stream 11-y012nr has an 11.6 inches diagonal HD SVA anti-glare WLED-backlit (1366 x 768). McAfee LiveSafe™, an anti-virus software, comes with the device and also Office 365 Personal that is free for one year.